Dear Seema,
with regard to your query about Hari's posting of '4 minutes please', I started the exercises at work: a few people noticed and asked me what I was doing, so I just forwarded them the ppt. - so now I am pleasantly surprised, when I take a walk around the office to see people sitting and doing these exercises at their workstations.
At first it may be a little embarassing but the second time it's a piece of cake.
regards
Debjani